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公开(公告)号：US20170257176A1
公开(公告)日：2017-09-07
申请号：US15229950
申请日：2016-08-05
Inventor： Ik Soo EO , Sang-Kyun Kim , Cheon Soo KIM , Jang Hong CHOI
CPC classification number: H04B17/14 , H04B17/0085 , H04B17/104
Abstract: A method and device for calibrating a DC offset and an I-Q imbalance component of an RF transceiver, the method including inputting a test signal into a transmitter, and converting the test signal into an analogue test signal; converting the analogue test signal using a transmitting mixer; sub-sampling a signal output from the transmitting mixer; and computing a DC offset calibrating constant number and an I-Q imbalance calibrating constant number from a sub-sampled signal.
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公开(公告)号：US09000958B1
公开(公告)日：2015-04-07
申请号：US14206522
申请日：2014-03-12
Inventor： Mi Jeong Park , Ik Soo Eo , Sang-Kyun Kim
IPC: H03M7/00
CPC classification number: H03H17/0628
Abstract: A data rate conversion device generates a first parameter representing a memory address position to sample and a second parameter representing a phase value of an estimation time point, records input data at a memory based on an input clock, outputs sampled continued data from the memory using the first parameter based on an output clock, and generates and outputs final data using the continued data, a plurality of filter coefficients, and the second parameter.
Abstract translation: 数据速率转换装置产生表示要采样的存储器地址位置的第一参数和表示估计时间点的相位值的第二参数，基于输入时钟将输入数据记录在存储器中，使用 基于输出时钟的第一参数，并且使用连续数据，多个滤波器系数和第二参数来生成和输出最终数据。
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公开(公告)号：US09379886B2
公开(公告)日：2016-06-28
申请号：US14793645
申请日：2015-07-07
Inventor： Sang-Kyun Kim , Mi-Jeong Park , Ik-Soo Eo
CPC classification number: H04L7/048 , H03H17/028 , H03H17/0628 , H04L25/05
Abstract: A sample rate converter and a method of converting a sample rate are disclosed herein. The sample rate converter includes a data delay unit, a clock rate conversion unit, a Lagrange polynomial filter unit, a resample position calculation unit, and a resample position compensation unit. The data delay unit delays signals in response to an input clock signal. The clock rate conversion unit converts the sample rate of the signals. The Lagrange polynomial filter unit performs a filtering function on the signals whose rate has been converted. The resample position calculation unit outputs the value (Dint, dfrac) of the resample position of the signals based on a set resample ratio value. The resample position compensation unit corrects the error value of the signals by applying the value (Dint, dfrac) to the signals, and outputs a final signal.
Abstract translation: 本文公开了采样率转换器和转换采样率的方法。 采样率转换器包括数据延迟单元，时钟速率转换单元，拉格朗日多项式滤波器单元，重采样位置计算单元和重采样位置补偿单元。 数据延迟单元响应输入时钟信号延迟信号。 时钟速率转换单元转换信号的采样率。 拉格朗日多项式滤波器单元对其速率已被转换的信号执行滤波功能。 重采样位置计算单元基于设置的重采样比值输出信号的采样位置的值（Dint，dfrac）。 重采样位置补偿单元通过对信号施加值（Dint，dfrac）来校正信号的误差值，并输出最终信号。
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公开(公告)号：US09780891B2
公开(公告)日：2017-10-03
申请号：US15229950
申请日：2016-08-05
Inventor： Ik Soo Eo , Sang-Kyun Kim , Cheon Soo Kim , Jang Hong Choi
CPC classification number: H04B17/14 , H04B17/0085 , H04B17/104
Abstract: A method and device for calibrating a DC offset and an I-Q imbalance component of an RF transceiver, the method including inputting a test signal into a transmitter, and converting the test signal into an analogue test signal; converting the analogue test signal using a transmitting mixer; sub-sampling a signal output from the transmitting mixer; and computing a DC offset calibrating constant number and an I-Q imbalance calibrating constant number from a sub-sampled signal.
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